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This bug may be related to metacity, but I am uncertain of that.
Since I upgraded to Natty, I've been having a problem when logging in
with the Gnome desktop (the Unity desktop is not available for me
because my graphics card has no available 3D driver). I've defined eight
workspaces, arranged in a 4x2 fashion. When I switch workspaces, using
CTRL-ALT-{left,right,up,down}-arrow, sometimes something (I suspect
metacity) does not redraw everything that needs to be drawn. Especially
window borders belonging to windows that are located on the previous
workspace are sometimes left over on the new workspace, but only on top
of windows located there, not on the background.
This is, however, not always the case, and I cannot seem to figure out
when it does and does not happen. If I trigger a complete screen redraw,
for example from a terminal by triggering the visual bell, then
everything is restored to how it is supposed to look.
I've attached four images: one of the workspace at (1,2) (on which I'm
filling in this bug report), one of the Gnome Terminal at (2,2) and one
of the Gnome Terminal at (1,2). When I'm viewing workspace (1,2), then
switch to (2,2) using CTRL-ALT-down-arrow, wait a second (keep on
pressing CTRL and ALT) and then switch to (1,2) using CTRL-ALT-left-
arrow, then I get (part of) the borders of the Gnome Terminal on (2,2)
drawn onto the Gnome Terminal at (1,2).
As stated, I'm not sure which package is responsible (for all I know,
perhaps the graphics driver is buggy and does not draw everything that
it's told to, although I don't have any other drawing problems).
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: metacity 1:2.30.3-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Thu May 5 21:21:53 2011
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
SourcePackage: metacity
UpgradeStatus: Upgraded to natty on 2011-04-16 (18 days ago)
** Affects: metacity (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-bug i386 natty
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Switching workspaces does not always redraw everything necessary
https://bugs.launchpad.net/bugs/778083
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